std/digest/sha512
std/digest/src/sha512.trb
Sha512, the SHA-512 of FIPS 180-4: the hash Ed25519 is defined over (RFC 8032 section 5.1, std/signature), and
the same shape as Sha256 - fed at once or in pieces, answering a Digest of 64 bytes.
Its words are 64 bits wide, so they are UInt64s and every sum is UInt64.addedWrapping, the one arithmetic of the
language that wraps instead of panicking; the shifts of an unsigned word are logical. No native, and the same bytes
give the same digest in both back ends.
type Sha512
type Sha512 with HasherSHA-512, fed in pieces: Sha512.add takes the next bytes and Sha512.finished answers the digest of everything added
so far without changing the hasher, so a hasher can be read, fed more, and read again.
Examples
print Sha512.of("abc".bytes()).hex()
fn empty
static fn empty(): SelfA hasher with nothing fed yet, the same as Self().
fn of
static fn of(bytes: Bytes): DigestThe digest of bytes in one call.
fn blockSize
static fn blockSize(): IntSHA-512 works in 128-byte blocks, twice Sha256's: its words are 64 bits wide, sixteen of them to a block.
fn digestLength
static fn digestLength(): Int64: a SHA-512 digest is 512 bits.
fn add
var fn add(bytes: Bytes)Feeds the next bytes.
fn finished
fn finished(): DigestThe digest of everything added so far. The hasher itself is unchanged and may be fed more.